revolving son of a bitch
n.— «I happen to be of an almost extinct breed, an old-fashioned gentleman—which means I can be a real revolving son of a bitch when it suits me.» —by Robert A. Heinlein Stranger in a Strange Land , 1961. (source: Double-Tongued Dictionary)
Further reading
A mixed-breed dog is sometimes called a bitsa, as in it’s made from “bits of this and bits of that.” This is part of a complete episode. Transcript of “A “Bitsa” Dog is Bits of This and Bits of That of that”” You know, we were talking...
Critters, co-workers, and clothes: What do you call your favorite mixed-breed dog? There are Heinz 57 mutts and Texas brown dogs in the U.S., while in parts of the Caribbean they’re called potcakes and coconut retrievers. Plus, among firefighters...